the passage of time from Creation Of Adam to Christs age.
One can argue "the time from the creation of the sun, until Christ's age" but the "days" of creation before that cannot be determined as to their length, because the sun did not yet exist so neither could the concept of a 24 hr day.
Also it should be noted that the bible uses different wording in reference to those first "days"
“Also it should be noted that the bible uses different wording in reference to those first “days”.”
Incorrect. The Hebrew word for Day in Genesis 1 was the same word Moses used for day referring to a 24 hour day.